window.onload = function () { function accumulate(m) { let sum = 0; for (let i = 0; i < m.length; sum += m[i], i++); return sum; } function random(max = 1, min = 0) { return Math.random() * (max - min) + min; } function reverseArray(arr) { let newArray = []; for (let i = arr.length - 1; i >= 0; i--) newArray.push((arr[i] == 1 ? 2 : (arr[i] == 2 ? 1 : arr[i]))); return newArray; } function generateMountainHeight() { let no = ""; for (let i = 0; i <= 5; i++) no += ((i % 2) ? Math.ceil(random(3, 4)).toString() : Math.ceil(random(5, 8)).toString()); return no; } // calculate sum of digit function sumOfDigit(no) { let sod = 0, n = Number(no); while (n) { sod += n % 10; n = Math.floor(n / 10); } return sod; } function array2D(r, c, val = 0) { let mat = new Array(r); for (let i = 0; i < r; i++) mat[i] = new Array(c); for (let i = 0; i < r; i++) for (let j = 0; j < c; j++) mat[i][j] = val; return mat; } function mountain(no) { // form matrix of size row, col, fill it with 0's let row = sumOfDigit(no) * 2, col = row / 2; let m = array2D(row, col, 0); // form line graph let t = col - 1, j = 0; // t = starting pt. for (let v = 0; v < no.length; v++) { let val = no[v] - '0'; while (val--) { if (v % 2 == 0) { m[t][j] = 1; t--; } else { m[t][j] = 2; t++; } j++; } t += (v % 2 == 0); } // forming mountains for (let i = 0; i < row; i++) { for (let j = 0; j < col; j++) { if (m[i][j] > 0) { for (let k = i + 1; k < row / 2; k++) m[k][j] = 3; } } } // merging the array with its mirror version for (let i = 0; i < row; i++) { if (accumulate(m[i]) > 0) { let tmp1 = reverseArray(m[i]); m[i] = (m[i].concat(tmp1)); } } // print only rows having graph element (/,\) let txt = ""; for (let i = 0; i < row; i++) { if (accumulate(m[i]) > 0) { for (let j = 0; j < 2 * col; j++) txt += ((m[i][j] == 1) ? "/" : ((m[i][j] == 2) ? "\\" : ((m[i][j] == 3 ? "." : ".")))); txt += ("
"); } } return txt; } function water(flag) { let txt = ""; let r = 4, c = 80; let trigWave = array2D(r, c, "•"); for (let i = 0; i < c; ++i) trigWave[Number(Math.round(1.5 * (flag ? Math.sin(i / 4) : Math.cos(i / 4)) + 1.5))][i] = "~"; for (let i = 0; i < r; i++) { for (let j = 0; j < c; j++) txt += (trigWave[i][j] + " "); txt += ("
"); } return txt; } let no = generateMountainHeight(); //"54848"; let tagTxt = document.getElementById('box'); let waterTxt = ""; for (let i = 0; i < 10; i++) waterTxt += water(Math.round(Math.random(0, 1))); tagTxt.innerHTML = mountain(no) + waterTxt; }

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